Process for the treatment of cotton.



ochlitzerstrasse i is s IEERNHABIP TEUFER, 01E GHEMNITZ, GERMANY.

PROCESS FOR THE TREATMENT 0F SUTTON.

No Drawing.

Specification of Letters Patent.

ratiilea May is, 1914,

Be it known that l, BnnNnAiu) TEUFER, a subject of the King of Saxony,residing at. 11, 'Chcmnitz, Saxony, Germany, have invented certain newand useful Improvements in llroccsses for the 'lreatmcnt of Cotton clarothe following to be a full, clear, and cxact description of theinvention.

My present invention relates to a process for the treatment of cotton,by which the cotton, Whether in the form of thread, yarn, or wovenfabric, is given all the characteristic appearance of silk.

Heretofore cotton has been subjected to firewall-known mercerizingprocess, in order to give the same-a glossy appearance, and by treatingniercerizccl. cotton in a soap or an acid both it acquires a smooth,softfeeling similar to that ofbi'ighteued SlllC. l" am also aware thatheretofore, and prior to the time when the nicrcerizilig process wasfirst intro-- duced, attempts had been made to impart a glossyappearance to cotton by subjecting the same to heavy pressure known thehis tering process. This has also been accomplished by the ,use ofsizing preparations and also, as in the so-called Eisengarn sewingthread, by a polishing and brushing process. In all these variousprocesses, however, so far as I am a'ware, the glossimparted by theusual lusterinp; process gen-- orally removes from the material therustling or crackling sound common to silk, and furthermore the spoolingor other Working of ordinary or mercorizecl yarn is made dillicult fromthe fact that the threads so treated adhere to each other or tend tostick together. These defects are cmnpletely overcome by the treatmentwhich I have discovered, so that the threads or the strands of yarn donot adhere or stick together, and \Vl'lQtl'Hl' treated as tl'rreads oryarn, or as a woven fabric the cotton assumesnot only the rustling orcrackling sound, the-soft, smooth and even touch, but also the gloss orshiny appearance of silk. In other words, the cotton treated inaccordance with my improved process has all the characteristicappearances of silk.

; and I do hereby dcimplication filed November 6, 1913. Serial No.799,527.

l The process consists in first treating cot l ton in a loath oi. strongsoapy solution and 1. 011 treating it, while stlll moist, in an acid lbath, such, for instanc", as acetic acid, sulturic acid, formic acid,lactic acid, or boracic acid. lly these treatments, the cotton assumesthe rustling or cracltlin sound. when moved, similarlo that caused bysilk, and after having been so treated, the matei rial is furthersubjected to high pressure by lm'caus oi calenders, the rolls of whichare l prefe ably provided with numerous small grooves in ordcr to impartto the material the luster and soft, smooth silk feeling.

'The process as hereinbefore described relates particularly tounniercerized cotton, and, as will be understood, the cotton may firstbe mercerized and then subjected to preccrized or unn'icrcerizcal, theresultant f .ect is the some that to say, as hereinletore s ated, thecotton subjected to my improved piocess assumes all the characteristicappearances of silk, and it it is desired to manufacture a dyedym'a'luct, said cot-ton may preferably be dyed before being treat ed bymy improved process.

' claim as my invei'ltiou 'l. The hereinl'ictoro described process ofpreparing; cotton to give tho some the appa rent characteristics of silltreating the material in an acid bath, and same to heavy pressure so asto calender the same. i

The hereinbctore described process of preparing cotton to give the somethe parent characteristic of silk, consisting in first iuercerizin thematerial, then treation the some in a strong soapy bath, then in an acidbath, and finally subjecting the mil-rial to heavy pressure, so as tocalender I the same. I

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses. i

BERNHARD TEU *Elt: lVi tnesscs F. KILnounNE l oorn, Eonnn'r J. M'Aonn.

cisely the same treatment, and whether over i, consisting in 3H :1 soapyboth, then finally subgceting' the

